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|Title: ||The quantum nature of skyrmions and half-skyrmions in Cu2OSeO3|
|Authors: ||Janson, Oleg|
Tsirlin, Alexander A.
Leonov, Andrei A.
Roessler, Ulrich K.
van den Brink, Jeroen
|Issue Date: ||2014|
|Publisher: ||© Macmillan Publishers Limited|
|Citation: ||JANSON, O. ... et al, 2014. The quantum nature of skyrmions and half-skyrmions in Cu2OSeO3. Nature Communications, 5, Article number 5376.|
|Abstract: ||The Skyrme-particle, the skyrmion, was introduced over half a century ago in the context of dense nuclear matter. But with skyrmions being mathematical objects -special types of topological solitons -they can emerge in much broader contexts. Recently skyrmions were observed in helimagnets, forming nanoscale spin-textures. Extending over length scales much larger than the interatomic spacing, they behave as large, classical objects, yet deep inside they are of quantum nature. Penetrating into their microscopic roots requires a multi-scale approach, spanning the full quantum to classical domain. Here, we achieve this for the first time in the skyrmionic Mott insulator Cu 2 OSeO 3. We show that its magnetic building blocks are strongly fluctuating Cu 4 tetrahedra, spawning a continuum theory that culminates in 51a ‰nm large skyrmions, in striking agreement with experiment. One of the further predictions that ensues is the temperature-dependent decay of skyrmions into half-skyrmions.|
|Description: ||This paper is closed access.|
|Publisher Link: ||https://doi.org/10.1038/ncomms6376|
|Appears in Collections:||Closed Access (Physics)|
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